Ralph Risdon stated to be living Risdon Manor, said to have been in Great Rissington, Gloucester, Eng. in the reign of King Richard 1 (reigned 1189-1199).
His descendant Robert Risdon is in Bableigh, Parkham (Okehampton), northern Devon in 1275.
We can only trace the line directly back to Thomas Risdon of Okehampton (Parkham) born about 1370. Thomas is probably the great or great-great-grandson of Robert.
Can anyone help me fill in the gaps between Thomas and Robert and between Robert and Ralph ?